From: Christoph Hellwig <hch@lst.de>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-m68k <linux-m68k@lists.linux-m68k.org>,
Christoph Hellwig <hch@lst.de>,
Linux IOMMU <iommu@lists.linux-foundation.org>,
Greg Ungerer <gerg@linux-m68k.org>
Subject: Re: [RFC] switch m68k to use the generic remapping DMA allocator
Date: Tue, 25 Jun 2019 08:32:28 +0200 [thread overview]
Message-ID: <20190625063228.GA29561@lst.de> (raw)
In-Reply-To: <CAMuHMdVPU5RQyX4FnHFEhxXZeG3v0uh_-t2FB=vAzQ8_3u-gSw@mail.gmail.com>
On Mon, Jun 17, 2019 at 08:53:55PM +0200, Geert Uytterhoeven wrote:
> Hi Christoph,
>
> On Fri, Jun 14, 2019 at 12:21 PM Christoph Hellwig <hch@lst.de> wrote:
> > can you take a look at the (untested) patches below? They convert m68k
> > to use the generic remapping DMA allocator, which is also used by
> > arm64 and csky.
>
> Thanks. But what does this buy us?
A common dma mapping code base with everyone, including supporting
DMA allocations from atomic context, which the documentation and
API assume are there, but which don't work on m68k.
> bloat-o-meter says:
>
> add/remove: 75/0 grow/shrink: 11/6 up/down: 4122/-82 (4040)
What do these values stand for? The code should grow a little as
we now need to include the the pool allocator for the above API
fix.
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next prev parent reply other threads:[~2019-06-25 6:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-14 10:21 [RFC] switch m68k to use the generic remapping DMA allocator Christoph Hellwig
2019-06-14 10:21 ` [PATCH 1/2] m68k: use the generic dma coherent remap allocator Christoph Hellwig
2019-06-14 10:21 ` [PATCH 2/2] m68k: implement arch_dma_prep_coherent Christoph Hellwig
2019-06-17 13:39 ` [RFC] switch m68k to use the generic remapping DMA allocator Greg Ungerer
2019-06-17 18:53 ` Geert Uytterhoeven
2019-06-25 6:32 ` Christoph Hellwig [this message]
2019-06-25 7:26 ` Geert Uytterhoeven
2019-06-25 7:35 ` Christoph Hellwig
2019-06-25 8:07 ` Geert Uytterhoeven
2019-06-24 7:16 ` Geert Uytterhoeven
2019-06-25 6:33 ` Christoph Hellwig
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